Cricket side pretty lacking in energy, a bit left (6)
I believe the answer is:
offcut
'a bit left' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.
'cricket side pretty lacking in energy' is the wordplay.
'cricket side' becomes 'off'.
'pretty' becomes 'cute' (both can mean attractive).
'lacking in' is a deletion indicator.
'energy' becomes 'e' (physics symbol as in E=mc2).
'cute' with 'e' removed is 'cut'.
'off'+'cut'='OFFCUT'
Can you help me to learn more?
(Other definitions for offcut that I've seen before include "Remnant of material" , "End" , "Piece of material left over" , "bit of stick?" , "Remnant for other uses" .)